:root {
  --primary: #2d6a4f; --primary-light: #40916c; --primary-dark: #1b4332;
  --accent: #74c69d; --accent-warm: #f77f00;
  --bg: #0f1117; --bg-card: #1a1d27; --bg-card-hover: #22263a;
  --bg-sidebar: #161920; --text-primary: #e8eaf0; --text-secondary: #9ba3b5;
  --text-muted: #5c6478; --border: #2a2d3e; --border-light: #353850;
  --shadow: 0 4px 20px rgba(0,0,0,0.4); --shadow-hover: 0 8px 32px rgba(0,0,0,0.6);
  --radius: 12px; --radius-sm: 8px; --transition: all 0.25s ease;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', monospace;
  --header-height: 64px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg);color:var(--text-primary);font-family:var(--font);line-height:1.6;min-height:100vh}
a{color:var(--accent);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:100;height:var(--header-height);background:rgba(15,17,23,0.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.site-header .container{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;cursor:pointer;text-decoration:none;color:var(--text-primary)}
.logo-icon{font-size:28px}
.logo-text{display:flex;flex-direction:column}
.logo-main{font-size:15px;font-weight:700;color:var(--text-primary)}
.logo-sub{font-size:11px;color:var(--text-muted);letter-spacing:.5px}
.site-nav{display:flex;align-items:center;gap:8px}
.nav-link{padding:6px 14px;border-radius:20px;color:var(--text-secondary);font-size:14px;font-weight:500;transition:var(--transition)}
.nav-link:hover,.nav-link.active{color:var(--accent);background:rgba(116,198,157,.12)}
.nav-highlight{color:var(--accent-warm)!important;background:rgba(247,127,0,.15)!important;font-weight:600}
.nav-highlight:hover{background:rgba(247,127,0,.25)!important}
.menu-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:22px;cursor:pointer;padding:4px}
.hero{position:relative;padding:24px 0 20px;overflow:hidden}
.hero-bg{display:none}
.hero-content{position:relative;z-index:1;text-align:center}
.hero-title{font-size:clamp(1.3rem,3vw,1.8rem);font-weight:700;color:var(--text-primary);margin-bottom:0}
.hero-desc{font-size:clamp(0.85rem,2vw,1rem);color:var(--text-secondary);margin-top:8px}
.main-content{padding:24px 0}
.content-layout{max-width:860px;margin:0 auto}
.section-header{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.section-title{font-size:20px;font-weight:700;color:var(--text-primary)}
.section-badge{font-size:12px;color:var(--text-muted);padding:3px 10px;background:var(--bg-card);border-radius:10px;border:1px solid var(--border)}
.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.article-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column}
.article-card:hover{border-color:var(--primary-light);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.card-footer{display:flex;align-items:center;justify-content:flex-end;margin-top:auto}
.card-read{font-size:12px;color:var(--primary-light);font-weight:500}
.card-body{padding:16px;flex:1;display:flex;flex-direction:column}
.card-meta{display:flex;gap:12px;font-size:11px;color:var(--text-muted);margin-bottom:8px}
.card-title{font-size:15px;font-weight:600;color:var(--text-primary);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-summary{font-size:13px;color:var(--text-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1;margin-bottom:12px}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;text-align:center;gap:12px}
.empty-icon{font-size:56px}
.empty-state h3{font-size:20px;color:var(--text-primary)}
.empty-state p{color:var(--text-muted)}
.btn-primary{display:inline-block;padding:10px 24px;background:var(--primary);color:#fff;border-radius:var(--radius-sm);font-size:14px;font-weight:600;border:none;cursor:pointer;transition:var(--transition);font-family:var(--font);text-decoration:none}
.btn-primary:hover{background:var(--primary-light);color:#fff}
.pagination{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:36px}
.page-btn{padding:8px 20px;background:var(--bg-card);border:1px solid var(--border);color:var(--text-primary);border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font);font-size:14px;transition:var(--transition)}
.page-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.page-btn:disabled{opacity:.4;cursor:not-allowed}
.page-info{font-size:14px;color:var(--text-secondary)}
.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:32px 0;margin-top:60px}
.footer-content{text-align:center}
.footer-logo{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:8px}
.footer-desc{font-size:13px;color:var(--text-muted);margin-bottom:6px}
.footer-copyright{font-size:12px;color:var(--text-muted)}
/* 文章页 */
.article-hero{padding:32px 0 16px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:16px}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--accent)}
.article-title{font-size:clamp(1.3rem,3vw,2rem);font-weight:700;color:var(--text-primary);margin-bottom:10px}
.article-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-muted);flex-wrap:wrap}
.article-content-wrapper{padding:24px 0 40px}
.article-body{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;max-width:860px;margin:0 auto}
.markdown-body{padding:32px;font-size:15px;line-height:1.8;color:var(--text-primary)}
.markdown-body h1{font-size:1.8em;margin:0 0 16px;color:#fff}
.markdown-body h2{font-size:1.3em;margin:32px 0 14px;color:var(--text-primary);padding-bottom:8px;border-bottom:2px solid var(--primary)}
.markdown-body h3{font-size:1.1em;margin:24px 0 10px;color:var(--accent)}
.markdown-body p{margin:0 0 14px}
.markdown-body ul,.markdown-body ol{padding-left:24px;margin:0 0 14px}
.markdown-body li{margin-bottom:6px}
.markdown-body strong{color:var(--accent);font-weight:600}
.markdown-body em{color:var(--text-secondary)}
.markdown-body blockquote{border-left:3px solid var(--primary);padding:12px 16px;margin:16px 0;background:rgba(45,106,79,.1);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary)}
.markdown-body code{font-family:var(--font-mono);font-size:.9em;padding:2px 6px;background:rgba(255,255,255,.08);border-radius:4px;color:var(--accent)}
.markdown-body pre{background:rgba(0,0,0,.4);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;overflow-x:auto;margin:16px 0}
.markdown-body pre code{background:none;padding:0;color:#e8eaf0}
.markdown-body hr{border:none;border-top:1px solid var(--border);margin:24px 0}
.markdown-body a{color:var(--accent);border-bottom:1px solid rgba(116,198,157,.3)}
.markdown-body a:hover{border-bottom-color:var(--accent)}
.article-footer{padding:16px 32px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:12px}
.share-btn{padding:6px 14px;background:transparent;border:1px solid var(--border);color:var(--text-secondary);border-radius:var(--radius-sm);font-size:13px;cursor:pointer;transition:var(--transition);font-family:var(--font)}
.share-btn:hover{border-color:var(--accent);color:var(--accent)}
.article-copyright{display:flex;align-items:flex-start;gap:14px;padding:20px 32px;background:rgba(45,106,79,.08);border-top:1px solid var(--border)}
.copyright-icon{font-size:28px;flex-shrink:0}
.copyright-text p{font-size:13px;color:var(--text-muted);line-height:1.6}
.copyright-text strong{color:var(--text-secondary)}
.back-to-top{position:fixed;bottom:32px;right:24px;width:40px;height:40px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);font-size:18px;cursor:pointer;opacity:0;visibility:hidden;transition:var(--transition);z-index:50}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--primary-light);transform:translateY(-2px)}
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%) translateY(10px);background:#2d6a4f;color:#fff;padding:10px 20px;border-radius:var(--radius-sm);font-size:14px;opacity:0;transition:all .3s;z-index:200;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:960px){.content-layout{max-width:100%;padding:0 16px}}
@media(max-width:640px){.site-nav{display:none;position:absolute;top:var(--header-height);left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border);flex-direction:column;padding:12px 20px;gap:4px;z-index:99}.site-nav.open{display:flex}.menu-toggle{display:block}.hero{padding:16px 0 12px}.hero-title{font-size:1.2rem}.articles-grid{grid-template-columns:1fr}.article-hero{padding:20px 0 12px}.markdown-body{padding:20px 16px}.article-footer{flex-direction:column}.article-copyright{flex-direction:column}}